What tree is ebony? Why is it so expensive? What's the use?

Ebony is unique to Sichuan, and is praised by Sichuanese as "the spirit of hundreds of trees" and "the fossil in the wood". Ebony, also known as ebony, sedimentary wood, dark wood and carbonized wood, is an ancient wood rather than modern wood. The price of Millennium ebony is priceless. No, it's what people usually call ebony. Because it is too scarce, it is very precious. Ebony (dark wood) has both the elegance of wood and the charm of stone, and is known as "Oriental Shenmu" and "plant mummy". Earthquakes, floods and mudslides bury all plants and creatures on the ground in low-lying places such as ancient riverbeds. Some trees buried in mud have been carbonized for thousands of years under the conditions of hypoxia and high pressure under the action of bacteria and other microorganisms, forming ebony, so it is also called "carbonized wood". Ebony was used to ward off evil spirits in past dynasties, making handicrafts, Buddha statues and amulet pendants. The ancients said, "A house of ebony is worth a box of treasures." Modern ebony wood is customarily divided into ebony (rhinoceros), Lvmu (tea black) and ebony (ebony). According to ancient records, "rhinoceros wood" is pure black. Very crisp: "tea black" is imported in the past, and its texture is solid, but it will sink in water; Ubuntu will be in the future, and Ubuntu will be rotten. In Japan, ebony wood is collectively referred to as ebony. According to the Nanyang Wood written by Miki Sudo, the difference (classification) of ebony is as follows: (1) ebony, and the heartwood color is pure black. (2) Striped ebony with black heartwood and gray or reddish brown stripes. (3) Green ebony, the heartwood is black, and the container is full of green substances with green stripes. (4) striped ebony, black and gray stripes, unable to weave marble wood and zebra wood. China folks sometimes refer to ebony (D.fusca, D. african blackwood) and ebony (Disopyros sp) as ebony.